try {
    var $data = $(".article-title")
    var title = $data.text();
    if (title) {
        title = $.trim(title);
        var subStr = title.match("《(.*)》");
        if (subStr) {
            title = subStr[1];
        }
        var buy_url = "https://ai.taobao.com/search/index.htm?key=" + encodeURIComponent(title) + "&pid=mm_16234744_1806700429_110511900427";
        document.writeln('<div class="alert alert-info" role="alert"> 购买纸版：<a href="' + buy_url + '" target="_blank" class="alert-link">' + $data.text() + '</a> </div>');
    }
} catch (e) {
    console.log(e);
}
